Historic river flooding as atmospheric river aims at Washington for a 4th consecutive day

It’s hard to put into words how extraordinary the ongoing atmospheric river event has been for western Washington. A 72-hour IR satellite loop shows how a band of moisture originating in the subtropics remained in place for nearly four straight days. As of Thursday morning, precipitation is finally beginning to taper off. A radar composite…

Two-part Atmospheric River event now underway

The “main event” is now underway in the PNW as radar on Monday morning shows broad coverage of light to moderate rain. Here’s the Langley (coastal WA) radar: The enhancement of the radar echoes as they move over terrain is clearly evident in this image. The moisture plume in atmospheric rivers is located fairly low…

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